磨损。吊钩截面周长或承载销超过磨损超过10%（或厂家推荐值）。
Wear. Any wear exceeding 10% (or as recommended by the manufacturer) of the original section dimension of the hook or its load pin.
OVX组截面总面积和外径周长也有逐渐增加趋势，但差异无显著性。
In OVX group the total tissue and periosteal perimeter also showed tendency to increase, but the two groups were not different significantly.
目前钻孔灌注桩基中的桩均为园形截面，和矩形截面的桩相比，园桩的周长、断面系数较小，抗弯能力差。
At present, piles with circular are used in all casting bore-hole pile foundations, but these piles have smaller perimeter and smaller section modulus as compare with the rectangular ones;
目前钻孔灌注桩基中的桩均为园形截面，和矩形截面的桩相比，园桩的周长、断面系数较小，抗弯能力差。
At present, piles with circular are used in all casting bore-hole pile foundations, but these piles have smaller perimeter and smaller section modulus as compare with the rectangular ones;
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